$ git clone -n https://src.fedoraproject.org/rpms/ghc-HStringTemplate.git /var/lib/mock/f45-build-9897-411/root/chroot_tmpdir/scmroot/ghc-HStringTemplate
Cloning into '/var/lib/mock/f45-build-9897-411/root/chroot_tmpdir/scmroot/ghc-HStringTemplate'...
$ git fetch origin 5d7d6462d5cbb9721cea8724fe1a3fd8a1371d96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-HStringTemplate
 * [new ref]         5d7d6462d5cbb9721cea8724fe1a3fd8a1371d96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d7d646 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild