$ git clone -n https://src.fedoraproject.org/rpms/GraphicsMagick.git /var/lib/mock/f40-build-800689-143611/root/chroot_tmpdir/scmroot/GraphicsMagick
Cloning into '/var/lib/mock/f40-build-800689-143611/root/chroot_tmpdir/scmroot/GraphicsMagick'...
$ git fetch origin 4c01e4561f64c7e0cf606b719b96e66bb8b80457:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/GraphicsMagick
 * [new ref]         4c01e4561f64c7e0cf606b719b96e66bb8b80457 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c01e45 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild