$ git clone -n https://src.fedoraproject.org/rpms/objectweb-asm.git /var/lib/mock/f40-build-2068414-49293/root/chroot_tmpdir/scmroot/objectweb-asm
Cloning into '/var/lib/mock/f40-build-2068414-49293/root/chroot_tmpdir/scmroot/objectweb-asm'...
$ git fetch origin b2b5372547953e1d95a57668e4b85e253622aaba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/objectweb-asm
 * [new ref]         b2b5372547953e1d95a57668e4b85e253622aaba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2b5372 Update to upstream version 9.6