$ git clone -n https://src.fedoraproject.org/rpms/golang-github-prometheus.git /var/lib/mock/f41-build-2495103-25485/root/chroot_tmpdir/scmroot/golang-github-prometheus
Cloning into '/var/lib/mock/f41-build-2495103-25485/root/chroot_tmpdir/scmroot/golang-github-prometheus'...
$ git fetch origin 92ae6cee897344be5f8165c39ad5d1d95450c2e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-prometheus
 * [new ref]         92ae6cee897344be5f8165c39ad5d1d95450c2e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92ae6ce convert ASL 2.0 license to SPDX