$ git clone -n https://src.fedoraproject.org/rpms/python-stackprinter.git /var/lib/mock/f40-build-2708814-71538/root/chroot_tmpdir/scmroot/python-stackprinter
Cloning into '/var/lib/mock/f40-build-2708814-71538/root/chroot_tmpdir/scmroot/python-stackprinter'...
$ git fetch origin 9a9f223a53495c8f77753629002ca7105d90141f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-stackprinter
 * [new ref]         9a9f223a53495c8f77753629002ca7105d90141f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a9f223 Update to latest upstream release 0.2.10 (closes rhbz#2251467)