$ git clone -n https://src.fedoraproject.org/rpms/libloader.git /var/lib/mock/f40-build-2672544-67520/root/chroot_tmpdir/scmroot/libloader
Cloning into '/var/lib/mock/f40-build-2672544-67520/root/chroot_tmpdir/scmroot/libloader'...
$ git fetch origin c0744b077381ca5c923c282b45cd5067d6d19b03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libloader
 * [new ref]         c0744b077381ca5c923c282b45cd5067d6d19b03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0744b0 Rebuilt for java-21-openjdk as system jdk