OBS: print date/time before git clone and on error

The OBS job clones a lot of repositories from git.osmocom.org every
night, so it is a good candidate to reproduce the "garbage at end of
loose object" error we are getting sporadically.

Print exact timestamps, so we can check if there is anything related in
the server logs, when this error happens again.

Related: OS#4083
Change-Id: Ic9a6d3f0c2b8dad2661ede793c21307f1680a52e

scripts/common.sh

@@ -89,6 +89,16 @@ osmo_git_last_tags() {
 	echo "$ret" | cut -d/ -f 3
 }
 
+# Pass all arguments to "git clone", but write the current date and time before the clone and on failure.
+# This helps analyzing errors with git.osmocom.org (OS#4083).
+osmo_git_clone_date() {
+	date "+%Y-%m-%d %H:%M:%S"
+	if ! git clone "$@"; then
+		date "+%Y-%m-%d %H:%M:%S"
+		exit 1
+	fi
+}
+
 # Print the subdirectory of the repository where the source lies (configure.ac etc.).
 # Print nothing when the source is in the topdir of the repository.
 osmo_source_subdir() {

scripts/osmocom-latest-packages.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+. "$(dirname "$0")/common.sh"
 . "$(dirname "$0")/common-obs.sh"
 
 # requirements
@@ -54,7 +55,7 @@ checkout() {
   if [ "$project" = "limesuite" ]; then
      [ -d "$project" ] || git clone "https://github.com/myriadrf/LimeSuite" "$project"
   else
-    [ -d "$project" ] || git clone "https://git.osmocom.org/$project"
+    [ -d "$project" ] || osmo_git_clone_date "https://git.osmocom.org/$project"
   fi
   cd "$project"
   git fetch

scripts/osmocom-nightly-packages.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+. "$(dirname "$0")/common.sh"
 . "$(dirname "$0")/common-obs.sh"
 
 # requirements
@@ -68,9 +69,9 @@ checkout() {
   cd "$REPO"
 
   if [ -n "$branch" ] ; then
-    git clone "$url/$name" -b "$branch"
+    osmo_git_clone_date "$url/$name" -b "$branch"
   else
-    git clone "$url/$name"
+    osmo_git_clone_date "$url/$name"
   fi
 
   cd -