$ git clone -n https://src.fedoraproject.org/rpms/ImageMagick.git /var/lib/mock/f42-build-3427583-45332/root/chroot_tmpdir/scmroot/ImageMagick
Cloning into '/var/lib/mock/f42-build-3427583-45332/root/chroot_tmpdir/scmroot/ImageMagick'...
$ git fetch origin 6cd3969980bebb8dca14ffb3629ce00aab75c5d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ImageMagick
 * [new ref]         6cd3969980bebb8dca14ffb3629ce00aab75c5d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6cd3969 Update to 7.1.1.45 upstream release