$ git clone -n https://src.fedoraproject.org/rpms/java-latest-openjdk-portable.git /var/lib/mock/f41-build-1021850-18037/root/chroot_tmpdir/scmroot/java-latest-openjdk-portable
Cloning into '/var/lib/mock/f41-build-1021850-18037/root/chroot_tmpdir/scmroot/java-latest-openjdk-portable'...
$ git fetch origin 0d5cc81b89331950f1f78b9f1970a7af96239444:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-latest-openjdk-portable
 * [new ref]         0d5cc81b89331950f1f78b9f1970a7af96239444 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d5cc81 April CPU