$ git clone -n https://src.fedoraproject.org/rpms/rubygem-pathspec.git /var/lib/mock/f45-build-35144-693/root/chroot_tmpdir/scmroot/rubygem-pathspec
Cloning into '/var/lib/mock/f45-build-35144-693/root/chroot_tmpdir/scmroot/rubygem-pathspec'...
$ git fetch origin 7e9da3efa935b55cd831d7b765d497d3c1921248:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-pathspec
 * [new ref]         7e9da3efa935b55cd831d7b765d497d3c1921248 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e9da3e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild