$ git clone -n https://src.fedoraproject.org/rpms/librsvg2.git /var/lib/mock/f40-build-2278741-55279/root/chroot_tmpdir/scmroot/librsvg2
Cloning into '/var/lib/mock/f40-build-2278741-55279/root/chroot_tmpdir/scmroot/librsvg2'...
$ git fetch origin cfd1b038f5570a43ac3bdb56fb0d249db97293d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librsvg2
 * [new ref]         cfd1b038f5570a43ac3bdb56fb0d249db97293d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfd1b03 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild