$ git clone -n https://src.fedoraproject.org/rpms/pre-commit.git /var/lib/mock/f39-build-1645932-40365/root/chroot_tmpdir/scmroot/pre-commit
Cloning into '/var/lib/mock/f39-build-1645932-40365/root/chroot_tmpdir/scmroot/pre-commit'...
$ git fetch origin c757afd27042f525aaa7f12cb8ea9cef27f9bbc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pre-commit
 * [new ref]         c757afd27042f525aaa7f12cb8ea9cef27f9bbc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c757afd Update to 3.5.0 (close RHBZ#2243884)