$ git clone -n https://src.fedoraproject.org/rpms/golang-github-prometheus-client.git /var/lib/mock/f38-build-side-42-init-devel-607739-26257/root/chroot_tmpdir/scmroot/golang-github-prometheus-client
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-607739-26257/root/chroot_tmpdir/scmroot/golang-github-prometheus-client'...
$ git fetch origin 5c6c3b3481adce130a1afcdd6be46dbe47546de4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-prometheus-client
 * [new ref]         5c6c3b3481adce130a1afcdd6be46dbe47546de4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c6c3b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild