$ git clone -n https://src.fedoraproject.org/rpms/java-11-openjdk.git /var/lib/mock/f38-build-side-42-init-devel-1054442-29764/root/chroot_tmpdir/scmroot/java-11-openjdk
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1054442-29764/root/chroot_tmpdir/scmroot/java-11-openjdk'...
$ git fetch origin 32e1bc999a0ba4b9fff4d74989436c36250d2f7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-11-openjdk
 * [new ref]         32e1bc999a0ba4b9fff4d74989436c36250d2f7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32e1bc9 Update to jdk-11.0.18+10 (GA)