$ git clone -n https://src.fedoraproject.org/rpms/libxdg-basedir.git /var/lib/mock/f45-build-17347-498/root/chroot_tmpdir/scmroot/libxdg-basedir
Cloning into '/var/lib/mock/f45-build-17347-498/root/chroot_tmpdir/scmroot/libxdg-basedir'...
$ git fetch origin 0c435a779ac533656f167655256b2a949b4a97af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxdg-basedir
 * [new ref]         0c435a779ac533656f167655256b2a949b4a97af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c435a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild