$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jackc-puddle.git /var/lib/mock/f45-build-12091-437/root/chroot_tmpdir/scmroot/golang-github-jackc-puddle
Cloning into '/var/lib/mock/f45-build-12091-437/root/chroot_tmpdir/scmroot/golang-github-jackc-puddle'...
$ git fetch origin 0ce4750a5403366267a12dddd9736dc160892f0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jackc-puddle
 * [new ref]         0ce4750a5403366267a12dddd9736dc160892f0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ce4750 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild