$ git clone -n https://github.com/xcp-ng-rpms/krb5.git /var/lib/mock/v8.3-u-pcoval2-10553-29108/root/chroot_tmpdir/scmroot/krb5
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10553-29108/root/chroot_tmpdir/scmroot/krb5'...
$ git fetch origin 572a53a7217da58241ec7e54e5957953e2c248c9:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/krb5
 * [new ref]         572a53a7217da58241ec7e54e5957953e2c248c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 572a53a bump release for test build