$ git clone -n https://src.fedoraproject.org/rpms/python-migrate.git /var/lib/mock/f41-build-731949-13178/root/chroot_tmpdir/scmroot/python-migrate
Cloning into '/var/lib/mock/f41-build-731949-13178/root/chroot_tmpdir/scmroot/python-migrate'...
$ git fetch origin 08022d850660200815ab3da864a42b938f88d0b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-migrate
 * [new ref]         08022d850660200815ab3da864a42b938f88d0b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08022d8 Eliminate use of obsolete %patchN syntax (#2283636)