$ git clone -n https://src.fedoraproject.org/rpms/xfburn.git /var/lib/mock/f41-build-side-1-2810792-32921/root/chroot_tmpdir/scmroot/xfburn
Cloning into '/var/lib/mock/f41-build-side-1-2810792-32921/root/chroot_tmpdir/scmroot/xfburn'...
$ git fetch origin 373641c65ead2a128f5f80b23145eb58e3431c2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfburn
 * [new ref]         373641c65ead2a128f5f80b23145eb58e3431c2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 373641c Update to v0.7.2