$ git clone -n https://src.fedoraproject.org/rpms/armacycles-ad.git /var/lib/mock/f39-build-1622745-38858/root/chroot_tmpdir/scmroot/armacycles-ad
Cloning into '/var/lib/mock/f39-build-1622745-38858/root/chroot_tmpdir/scmroot/armacycles-ad'...
$ git fetch origin d6c1976d68a15596d5225487765e58a8e61781f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/armacycles-ad
 * [new ref]         d6c1976d68a15596d5225487765e58a8e61781f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6c1976 0.2.9.1.1