$ git clone -n https://src.fedoraproject.org/rpms/xfe.git /var/lib/mock/f45-build-38838-728/root/chroot_tmpdir/scmroot/xfe
Cloning into '/var/lib/mock/f45-build-38838-728/root/chroot_tmpdir/scmroot/xfe'...
$ git fetch origin 9f52439a26e4fcdf72f33a7f341cce5833353967:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfe
 * [new ref]         9f52439a26e4fcdf72f33a7f341cce5833353967 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f52439 2.1.11