$ git clone -n https://src.fedoraproject.org/rpms/python-pkgconfig.git /var/lib/mock/f45-build-31992-656/root/chroot_tmpdir/scmroot/python-pkgconfig
Cloning into '/var/lib/mock/f45-build-31992-656/root/chroot_tmpdir/scmroot/python-pkgconfig'...
$ git fetch origin 188fdee9f757d8ae0c877381cdc4e26e438b67e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pkgconfig
 * [new ref]         188fdee9f757d8ae0c877381cdc4e26e438b67e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 188fdee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild