$ git clone -n https://src.fedoraproject.org/rpms/ghc-email-validate.git /var/lib/mock/f40-build-2074903-49445/root/chroot_tmpdir/scmroot/ghc-email-validate
Cloning into '/var/lib/mock/f40-build-2074903-49445/root/chroot_tmpdir/scmroot/ghc-email-validate'...
$ git fetch origin 10d43373873ce574b5601649c0c2a0c21aed5125:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-email-validate
 * [new ref]         10d43373873ce574b5601649c0c2a0c21aed5125 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10d4337 bump release