$ git clone -n https://src.fedoraproject.org/rpms/golang-github-marstr-randname.git /var/lib/mock/f38-build-side-42-init-devel-944224-28778/root/chroot_tmpdir/scmroot/golang-github-marstr-randname
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-944224-28778/root/chroot_tmpdir/scmroot/golang-github-marstr-randname'...
$ git fetch origin 4c658f100240e29923a97711af5f0d0415e68d16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-marstr-randname
 * [new ref]         4c658f100240e29923a97711af5f0d0415e68d16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c658f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild