$ git clone -n https://src.fedoraproject.org/rpms/golang-github-prometheus-alertmanager.git /var/lib/mock/f39-build-1825556-41863/root/chroot_tmpdir/scmroot/golang-github-prometheus-alertmanager
Cloning into '/var/lib/mock/f39-build-1825556-41863/root/chroot_tmpdir/scmroot/golang-github-prometheus-alertmanager'...
$ git fetch origin 8d2de7df4f788e35dd8e9a4fa58335d17cf661ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-prometheus-alertmanager
 * [new ref]         8d2de7df4f788e35dd8e9a4fa58335d17cf661ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d2de7d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild