$ git clone -n https://src.fedoraproject.org/rpms/jzlib.git /var/lib/mock/f40-build-2563040-62145/root/chroot_tmpdir/scmroot/jzlib
Cloning into '/var/lib/mock/f40-build-2563040-62145/root/chroot_tmpdir/scmroot/jzlib'...
$ git fetch origin e10ea88b75f39accd628dbc6dd84b3f4181b9397:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jzlib
 * [new ref]         e10ea88b75f39accd628dbc6dd84b3f4181b9397 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e10ea88 Rebuilt for java-21-openjdk as system jdk