$ git clone -n https://src.fedoraproject.org/rpms/cairo-dock.git /var/lib/mock/f41-build-side-1-2656037-28431/root/chroot_tmpdir/scmroot/cairo-dock
Cloning into '/var/lib/mock/f41-build-side-1-2656037-28431/root/chroot_tmpdir/scmroot/cairo-dock'...
$ git fetch origin 25904465734b9f1446a3c3e8d1f2af0d061c1de0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cairo-dock
 * [new ref]         25904465734b9f1446a3c3e8d1f2af0d061c1de0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2590446 kill sanitizer