$ git clone -n https://src.fedoraproject.org/rpms/yoshimi.git /var/lib/mock/f45-build-39255-733/root/chroot_tmpdir/scmroot/yoshimi
Cloning into '/var/lib/mock/f45-build-39255-733/root/chroot_tmpdir/scmroot/yoshimi'...
$ git fetch origin a4785509f6ea5dfffe577199951f34181bbfd053:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yoshimi
 * [new ref]         a4785509f6ea5dfffe577199951f34181bbfd053 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a478550 drop unused patches