$ git clone -n https://src.fedoraproject.org/rpms/golang-github-juju-gnuflag.git /var/lib/mock/f40-build-2594519-62740/root/chroot_tmpdir/scmroot/golang-github-juju-gnuflag
Cloning into '/var/lib/mock/f40-build-2594519-62740/root/chroot_tmpdir/scmroot/golang-github-juju-gnuflag'...
$ git fetch origin 5a770908c6413261fdd7d096951b0d62e48a8276:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-juju-gnuflag
 * [new ref]         5a770908c6413261fdd7d096951b0d62e48a8276 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a77090 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild