$ git clone -n https://src.fedoraproject.org/rpms/libbluray.git /var/lib/mock/f39-build-1489996-34503/root/chroot_tmpdir/scmroot/libbluray
Cloning into '/var/lib/mock/f39-build-1489996-34503/root/chroot_tmpdir/scmroot/libbluray'...
$ git fetch origin 1d59c52daac80a3ab5f842b05eb18115550b59b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libbluray
 * [new ref]         1d59c52daac80a3ab5f842b05eb18115550b59b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d59c52 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild