$ git clone -n https://src.fedoraproject.org/rpms/golang-github-imdario-mergo.git /var/lib/mock/f40-build-2582332-62390/root/chroot_tmpdir/scmroot/golang-github-imdario-mergo
Cloning into '/var/lib/mock/f40-build-2582332-62390/root/chroot_tmpdir/scmroot/golang-github-imdario-mergo'...
$ git fetch origin c804a27f2d028054fc9ab58f98cf4cf43cf947f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-imdario-mergo
 * [new ref]         c804a27f2d028054fc9ab58f98cf4cf43cf947f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c804a27 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild