$ git clone -n https://src.fedoraproject.org/rpms/aquamarine.git /var/lib/mock/f41-build-855977-167432/root/chroot_tmpdir/scmroot/aquamarine
Cloning into '/var/lib/mock/f41-build-855977-167432/root/chroot_tmpdir/scmroot/aquamarine'...
$ git fetch origin b07704fdd7c7f6806ed23753b259b9ffc0f96f38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aquamarine
 * [new ref]         b07704fdd7c7f6806ed23753b259b9ffc0f96f38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b07704f Update to 0.4.2