$ git clone -n https://src.fedoraproject.org/rpms/rubygem-xpath.git /var/lib/mock/f40-build-1430271-23572/root/chroot_tmpdir/scmroot/rubygem-xpath
Cloning into '/var/lib/mock/f40-build-1430271-23572/root/chroot_tmpdir/scmroot/rubygem-xpath'...
$ git fetch origin 8b167838284c6921eccc4c1e96707980c7355e26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-xpath
 * [new ref]         8b167838284c6921eccc4c1e96707980c7355e26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b16783 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild