$ git clone -n https://src.fedoraproject.org/rpms/java-runtime-decompiler.git /var/lib/mock/f38-build-side-42-init-devel-772992-27763/root/chroot_tmpdir/scmroot/java-runtime-decompiler
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-772992-27763/root/chroot_tmpdir/scmroot/java-runtime-decompiler'...
$ git fetch origin a3812684cc25e9aaad656395017ab0d790304319:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-runtime-decompiler
 * [new ref]         a3812684cc25e9aaad656395017ab0d790304319 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a381268 Adapted procyon patches