$ git clone -n https://src.fedoraproject.org/rpms/ghc-regex-pcre.git /var/lib/mock/f38-build-side-42-init-devel-691114-26825/root/chroot_tmpdir/scmroot/ghc-regex-pcre
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-691114-26825/root/chroot_tmpdir/scmroot/ghc-regex-pcre'...
$ git fetch origin 9075df6360c16f459c880f4542b928a59be14ebf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-regex-pcre
 * [new ref]         9075df6360c16f459c880f4542b928a59be14ebf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9075df6 Convert to %autorelease and %autochangelog