$ git clone -n https://src.fedoraproject.org/rpms/openjdk-asmtools.git /var/lib/mock/f39-build-1542169-36513/root/chroot_tmpdir/scmroot/openjdk-asmtools
Cloning into '/var/lib/mock/f39-build-1542169-36513/root/chroot_tmpdir/scmroot/openjdk-asmtools'...
$ git fetch origin 277865140b087c936aaab75645df2d79f6d96fa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openjdk-asmtools
 * [new ref]         277865140b087c936aaab75645df2d79f6d96fa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2778651 Bumped to 8.0-b09