$ git clone -n https://src.fedoraproject.org/rpms/meson.git /var/lib/mock/f41-build-side-1-3132763-39664/root/chroot_tmpdir/scmroot/meson
Cloning into '/var/lib/mock/f41-build-side-1-3132763-39664/root/chroot_tmpdir/scmroot/meson'...
$ git fetch origin 649ac4669d2724feef9d9a029eee0ab040b73701:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/meson
 * [new ref]         649ac4669d2724feef9d9a029eee0ab040b73701 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 649ac46 Version 1.5.1