$ git clone -n https://src.fedoraproject.org/rpms/xmobar.git /var/lib/mock/f40-build-744874-111851/root/chroot_tmpdir/scmroot/xmobar
Cloning into '/var/lib/mock/f40-build-744874-111851/root/chroot_tmpdir/scmroot/xmobar'...
$ git fetch origin 77f5da791913b90f7947f974a38b60921796a670:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmobar
 * [new ref]         77f5da791913b90f7947f974a38b60921796a670 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77f5da7 bump release