$ git clone -n https://src.fedoraproject.org/rpms/kf6-threadweaver.git /var/lib/mock/f42-build-3346736-45002/root/chroot_tmpdir/scmroot/kf6-threadweaver
Cloning into '/var/lib/mock/f42-build-3346736-45002/root/chroot_tmpdir/scmroot/kf6-threadweaver'...
$ git fetch origin 66063e35a6c80b50bddb3c9d4f7a1cca225a3be5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-threadweaver
 * [new ref]         66063e35a6c80b50bddb3c9d4f7a1cca225a3be5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66063e3 6.12.0