$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-token.git /var/lib/mock/f45-build-12740-443/root/chroot_tmpdir/scmroot/golang-modernc-token
Cloning into '/var/lib/mock/f45-build-12740-443/root/chroot_tmpdir/scmroot/golang-modernc-token'...
$ git fetch origin 242fd62cf3f52eb0f156143a6b786c7eea6f65f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-token
 * [new ref]         242fd62cf3f52eb0f156143a6b786c7eea6f65f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 242fd62 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild