$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jba-printsrc.git /var/lib/mock/f39-build-1503794-34987/root/chroot_tmpdir/scmroot/golang-github-jba-printsrc
Cloning into '/var/lib/mock/f39-build-1503794-34987/root/chroot_tmpdir/scmroot/golang-github-jba-printsrc'...
$ git fetch origin e891d8e68206f6365508026031e62955ce65945d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jba-printsrc
 * [new ref]         e891d8e68206f6365508026031e62955ce65945d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e891d8e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild