$ git clone -n https://src.fedoraproject.org/rpms/ghc-tasty-kat.git /var/lib/mock/f45-build-10821-424/root/chroot_tmpdir/scmroot/ghc-tasty-kat
Cloning into '/var/lib/mock/f45-build-10821-424/root/chroot_tmpdir/scmroot/ghc-tasty-kat'...
$ git fetch origin 71714914be470f8756c7d4b25e9f1f5cefd2e924:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-tasty-kat
 * [new ref]         71714914be470f8756c7d4b25e9f1f5cefd2e924 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7171491 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild