$ git clone -n https://src.fedoraproject.org/rpms/supermin.git /var/lib/mock/f42-build-865565-173304/root/chroot_tmpdir/scmroot/supermin
Cloning into '/var/lib/mock/f42-build-865565-173304/root/chroot_tmpdir/scmroot/supermin'...
$ git fetch origin 38ee6830fa36b39dc3c804bc505dc110eff81027:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/supermin
 * [new ref]         38ee6830fa36b39dc3c804bc505dc110eff81027 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38ee683 OCaml 5.3.0 rebuild for Fedora 42