$ git clone -n https://src.fedoraproject.org/rpms/golang.git /var/lib/mock/f40-build-2584865-62410/root/chroot_tmpdir/scmroot/golang
Cloning into '/var/lib/mock/f40-build-2584865-62410/root/chroot_tmpdir/scmroot/golang'...
$ git fetch origin b1a2ca69341f53c5e82dac8308dbedfcc66b4bec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang
 * [new ref]         b1a2ca69341f53c5e82dac8308dbedfcc66b4bec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1a2ca6 [packit] 1.22.1 upstream release