$ git clone -n https://src.fedoraproject.org/rpms/proguard.git /var/lib/mock/f40-build-2526607-61812/root/chroot_tmpdir/scmroot/proguard
Cloning into '/var/lib/mock/f40-build-2526607-61812/root/chroot_tmpdir/scmroot/proguard'...
$ git fetch origin 5995f295db7de3fb80af469c87c4a1cfe42a3a49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proguard
 * [new ref]         5995f295db7de3fb80af469c87c4a1cfe42a3a49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5995f29 Rebuilt for java-21-openjdk as system jdk