$ git clone -n https://src.fedoraproject.org/rpms/mold.git /var/lib/mock/f39-build-1781361-41557/root/chroot_tmpdir/scmroot/mold
Cloning into '/var/lib/mock/f39-build-1781361-41557/root/chroot_tmpdir/scmroot/mold'...
$ git fetch origin 5b2e6cd0a4165b6faee28d09b95bb4aef028ec58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mold
 * [new ref]         5b2e6cd0a4165b6faee28d09b95bb4aef028ec58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b2e6cd Bump version to 2.3.3