$ git clone -n https://github.com/fedora-riscv/guile.git /var/lib/mock/f39-build-1913999-42881/root/chroot_tmpdir/scmroot/guile
Cloning into '/var/lib/mock/f39-build-1913999-42881/root/chroot_tmpdir/scmroot/guile'...
$ git fetch origin 0813c743ad24ccc83fc74f1b02994681a417afb3:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/guile
 * [new ref]         0813c743ad24ccc83fc74f1b02994681a417afb3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0813c74 Merge remote-tracking branch 'fedoraproject/f39' into f39-rv64