$ git clone -n https://src.fedoraproject.org/rpms/golang-github-groupcache.git /var/lib/mock/f40-build-2696973-69833/root/chroot_tmpdir/scmroot/golang-github-groupcache
Cloning into '/var/lib/mock/f40-build-2696973-69833/root/chroot_tmpdir/scmroot/golang-github-groupcache'...
$ git fetch origin e84477a07187b1ca7f2cb1bc99f58c541facca87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-groupcache
 * [new ref]         e84477a07187b1ca7f2cb1bc99f58c541facca87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e84477a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild