$ git clone -n https://src.fedoraproject.org/rpms/golang-github-masterminds-vcs.git /var/lib/mock/f39-build-1666803-40804/root/chroot_tmpdir/scmroot/golang-github-masterminds-vcs
Cloning into '/var/lib/mock/f39-build-1666803-40804/root/chroot_tmpdir/scmroot/golang-github-masterminds-vcs'...
$ git fetch origin 4d207fd8ec9975b7ab54093e08000003944c254c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-masterminds-vcs
 * [new ref]         4d207fd8ec9975b7ab54093e08000003944c254c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d207fd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild