$ git clone -n https://src.fedoraproject.org/rpms/golang-github-appc-spec.git /var/lib/mock/f39-build-1909680-42872/root/chroot_tmpdir/scmroot/golang-github-appc-spec
Cloning into '/var/lib/mock/f39-build-1909680-42872/root/chroot_tmpdir/scmroot/golang-github-appc-spec'...
$ git fetch origin 994fe5f8bd1b2d861005e7b9462e101f3eb33b36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-appc-spec
 * [new ref]         994fe5f8bd1b2d861005e7b9462e101f3eb33b36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 994fe5f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild