$ git clone -n https://src.fedoraproject.org/rpms/ebook-tools.git /var/lib/mock/f41-build-1018523-17947/root/chroot_tmpdir/scmroot/ebook-tools
Cloning into '/var/lib/mock/f41-build-1018523-17947/root/chroot_tmpdir/scmroot/ebook-tools'...
$ git fetch origin dd0aad31b83b826723ade3007d8d43789f56a062:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ebook-tools
 * [new ref]         dd0aad31b83b826723ade3007d8d43789f56a062 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd0aad3 Eliminate use of obsolete %patchN syntax (#2283636)