$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jackc-pgconn.git /var/lib/mock/f45-build-12081-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgconn
Cloning into '/var/lib/mock/f45-build-12081-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgconn'...
$ git fetch origin 9828a4319dd30b43a647d73e887da77b863270b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jackc-pgconn
 * [new ref]         9828a4319dd30b43a647d73e887da77b863270b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
Updating files:  40% (2/5)
Updating files:  60% (3/5)
Updating files:  80% (4/5)
Updating files: 100% (5/5)
Updating files: 100% (5/5), done.
HEAD is now at 9828a43 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild