$ git clone -n https://src.fedoraproject.org/rpms/proguard.git /var/lib/mock/f41-build-756819-13422/root/chroot_tmpdir/scmroot/proguard
Cloning into '/var/lib/mock/f41-build-756819-13422/root/chroot_tmpdir/scmroot/proguard'...
$ git fetch origin f2c4e90fae0cc0b61a2b56dbf05fefe7f9f5f5ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proguard
 * [new ref]         f2c4e90fae0cc0b61a2b56dbf05fefe7f9f5f5ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2c4e90 Rebuilt for java-21-openjdk as system jdk