$ git clone -n https://src.fedoraproject.org/rpms/evolution.git /var/lib/mock/f39-build-2280105-55362/root/chroot_tmpdir/scmroot/evolution
Cloning into '/var/lib/mock/f39-build-2280105-55362/root/chroot_tmpdir/scmroot/evolution'...
$ git fetch origin c1b87ac6202143974332ff8289c1f714f542d9bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution
 * [new ref]         c1b87ac6202143974332ff8289c1f714f542d9bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1b87ac Update to 3.50.3