$ git clone -n https://src.fedoraproject.org/rpms/python-pysrt.git /var/lib/mock/f40-build-2317776-58183/root/chroot_tmpdir/scmroot/python-pysrt
Cloning into '/var/lib/mock/f40-build-2317776-58183/root/chroot_tmpdir/scmroot/python-pysrt'...
$ git fetch origin b021f6dee8490dc524e5dadd44e50304c073d09b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pysrt
 * [new ref]         b021f6dee8490dc524e5dadd44e50304c073d09b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b021f6d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild