$ git clone -n https://src.fedoraproject.org/rpms/retsnoop.git /var/lib/mock/f40-build-2080322-49712/root/chroot_tmpdir/scmroot/retsnoop
Cloning into '/var/lib/mock/f40-build-2080322-49712/root/chroot_tmpdir/scmroot/retsnoop'...
$ git fetch origin 1740552bc6e64920143c56cb83105b9b0e75910f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/retsnoop
 * [new ref]         1740552bc6e64920143c56cb83105b9b0e75910f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1740552 Fix 32-bit builds