$ git clone -n https://src.fedoraproject.org/rpms/migrate.git /var/lib/mock/f41-build-1042250-18998/root/chroot_tmpdir/scmroot/migrate
Cloning into '/var/lib/mock/f41-build-1042250-18998/root/chroot_tmpdir/scmroot/migrate'...
$ git fetch origin 88515edcbc3a0a49acf770c4736ad867f9f801ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/migrate
 * [new ref]         88515edcbc3a0a49acf770c4736ad867f9f801ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88515ed Update to version 4.17.1 (RHBZ#2276162)