$ git clone -n https://src.fedoraproject.org/rpms/adwaita-icon-theme.git /var/lib/mock/f42-build-3292886-41426/root/chroot_tmpdir/scmroot/adwaita-icon-theme
Cloning into '/var/lib/mock/f42-build-3292886-41426/root/chroot_tmpdir/scmroot/adwaita-icon-theme'...
$ git fetch origin cc2ac7a32b3531478702d28fa658329fba2d7132:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/adwaita-icon-theme
 * [new ref]         cc2ac7a32b3531478702d28fa658329fba2d7132 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc2ac7a Update to 48.beta