$ git clone -n https://src.fedoraproject.org/rpms/ImageMagick.git /var/lib/mock/f42-build-3427170-45202/root/chroot_tmpdir/scmroot/ImageMagick
Cloning into '/var/lib/mock/f42-build-3427170-45202/root/chroot_tmpdir/scmroot/ImageMagick'...
$ git fetch origin 6eba813729799faf31bdbe6dda4c4d2615ab1d6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ImageMagick
 * [new ref]         6eba813729799faf31bdbe6dda4c4d2615ab1d6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6eba813 Update to 7.1.1.46 upstream release