$ git clone -n https://src.fedoraproject.org/rpms/chromium.git /var/lib/mock/f41-build-1046792-19100/root/chroot_tmpdir/scmroot/chromium
Cloning into '/var/lib/mock/f41-build-1046792-19100/root/chroot_tmpdir/scmroot/chromium'...
$ git fetch origin 8479637a3e1ee7f84ef2fce7f0acb1cea16aca0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chromium
 * [new ref]         8479637a3e1ee7f84ef2fce7f0acb1cea16aca0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8479637 fix build error on el7 and el8 - fatal error: sys/ifunc.h file not found