$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-z.git /var/lib/mock/f40-build-2431617-60639/root/chroot_tmpdir/scmroot/golang-modernc-z
Cloning into '/var/lib/mock/f40-build-2431617-60639/root/chroot_tmpdir/scmroot/golang-modernc-z'...
$ git fetch origin 34a7272f7e68d62d84b98961a36f688cdd4198c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-z
 * [new ref]         34a7272f7e68d62d84b98961a36f688cdd4198c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34a7272 Rebuild for golang 1.22.0