$ git clone -n https://src.fedoraproject.org/rpms/log4net.git /var/lib/mock/f41-build-696651-12816/root/chroot_tmpdir/scmroot/log4net
Cloning into '/var/lib/mock/f41-build-696651-12816/root/chroot_tmpdir/scmroot/log4net'...
$ git fetch origin 4b8e71adacef8e752d79a26502e1a94883705d69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/log4net
 * [new ref]         4b8e71adacef8e752d79a26502e1a94883705d69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b8e71a Eliminate use of obsolete %patchN syntax (#2283636)