$ git clone -n https://src.fedoraproject.org/rpms/ImageMagick.git /var/lib/mock/f41-build-side-1-2645758-27203/root/chroot_tmpdir/scmroot/ImageMagick
Cloning into '/var/lib/mock/f41-build-side-1-2645758-27203/root/chroot_tmpdir/scmroot/ImageMagick'...
$ git fetch origin abd36fbe95dd352ac64c37671c94f9e7d6afd209:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ImageMagick
 * [new ref]         abd36fbe95dd352ac64c37671c94f9e7d6afd209 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abd36fb Update ImageMagick to 7.1.1.38 (#2293863)