$ git clone -n https://src.fedoraproject.org/rpms/golang-github-prometheus-tsdb.git /var/lib/mock/f39-build-2008276-44977/root/chroot_tmpdir/scmroot/golang-github-prometheus-tsdb
Cloning into '/var/lib/mock/f39-build-2008276-44977/root/chroot_tmpdir/scmroot/golang-github-prometheus-tsdb'...
$ git fetch origin a56e5a8e706316d2f52726a81eb301304373cde4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-prometheus-tsdb
 * [new ref]         a56e5a8e706316d2f52726a81eb301304373cde4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a56e5a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild